drone makers predict they'll eventually been used by energy company to monitor pipelines and by farmers to monitor crops. new uses will require new government rules to protect privacy. >> we don't want drones to become eyes in the sky, constantly spying on us. we need control so that drones are only used when we believe that a crime is happening or we're trying to fight a forest fire or find a missing child, something like that. if we put those in controls in place, we'll have a powerful technology that has appropriate controls. >> reporter: in seattle earlier this month, the mayor ended a police department drone program over privacy concerns. and the virginia legislature is at work on bills that would temporarily ban drones there. now, the faa is asking for a public input on its proposed privacy requirements for these tests. and this privacy issue isn't going away. just this week, two house members, a republican and a democrat, introduced a bill that would require law enforcement to get search warrants before using drones. this continues. >> definitely will. that fine line between help